package com.itheima.config;

import com.itheima.common.JacksonObjectMapper;
import com.itheima.filter.LoginCheckInterceptor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {

    // 设置静态资源映射
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始进行静态资源映射");
        //路径中带有/backend的,映射到classpath:/backend路径下相关资源.
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    //扩展MVC框架的消息转换器
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
        //设置消息转换器对象, 底层是使用了Jackson将java对象转换为json.
        mappingJackson2HttpMessageConverter.setObjectMapper(new JacksonObjectMapper());
        //将消息转换器对象追加到MVC框架的转换器集合中.
        converters.add(0, mappingJackson2HttpMessageConverter);
    }

    //注入拦截器对象
    @Autowired
    private LoginCheckInterceptor loginCheckInterceptor;

    //绑定拦截器拦截路径
    @Override
    protected void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginCheckInterceptor).addPathPatterns("/**").excludePathPatterns(
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "/front/**",
                "/common/**",
                "/user/sendMsg",  //移动端发送短信
                "/user/login"   //移动端登录
        );
    }

}
